Aromatic fluoro-hydrocarbon.



UNITED STATES PATENT OFFICE.

FRIEDRICH VALENTINER, OF LEIPSIC-PLAGWITZ, GERMANY.

AROMATIC FLUORO-HYDROCARBON.

SPECIFICATION forming part of Letters Patent No. 656,229, dated August21, 1900.

' Application filed Apri130,1897. Serial No. 634,632r (Specimens) To allwhom it may concern:

Be it known that I, FRIEDRICH VALEN- TINER, of Leipsie-Plagwitz, in theKingdom of Saxony, in the German Empire, have in- Vented a new anduseful Process for the Production of Aromatic Fluoro-Hydrocarbons inAqueous Solution, of which the following is a specification.

The methods known at present for the production of organic fiuorincompounds are not suitable for manufacture on a large scale. Even withthe best processthat proposed by Wallach-a week is required tomanufacture a single kilogram of a compound of fluorin.

The process hereinafter described and claimed is extremely simple and atthe same time very suitable for the production of aromaticfiuoro-hydrocarbons in aqueous solution in any desired quantities.

Example: Ten kilograms of phenetidin dissolved in a solution oftwenty-two kilograms of hydrochloric acid and twenty kilograms of waterare diazotized with 5.11 kilograms of sodium nitrite NaNO The resultingso-' lution of diazo-chlorid is dissociated with thirty kilograms ofhydro-fluoricacid. The oil obtained is separated from the solution,distilled byintroducing water vapor, and then fractionally distilled.

The pure product is a yellow liquid which possesses an agreeablearomatic smell, resembling that of anise.

The boiling-point of the liquid is 197 centigrade. The freezing-point is+17 centigrade.

The substance is practically insoluble in 3 5 water, but is soluble inether, alcohol, chloroform, ligroin, and fatty oils.

The chemical reaction consists of the following two phases:

